The cause was an outage in the FAA's notice to air missions computer system or NOTAM.

原因是美国联邦航空局的空中任务通知计算机系统(NOTAM)出现故障。

759. The NOTAM says this part of the taxiway is closed during this period, please verify.

759. NOTAM 表示这部分滑行道在此期间关闭，请核实。